Metal window sash



Nov. 30, 1943.

M. B. SCHILLER v METAL WINDOW SASH Filed Nv. 4, 1942 Patented Nov. 30, 1943 UNITED STATES PATENT OFFICE MIETAL WINDOW SASH Application November 4, 1942, Serial No. 464,555

7 Claims. (Cl. 16B- 395) My invention relates to window structures, particularly to window screens, and the invention is found in improvements in means for marginally securing a sheet or panel of wire screen in a metal frame or sash. This application for patent consists in a continuation in part of application Serial No. 320,886, i'lled by me February 26, 1940, now Letters Patent No. 2,304,423 dated December 8, 1942, and entitled Metal window sash.

In the accompanying drawing Fig. I is a fragmentary View, showing in side elevation a window screen embodying the invention; Fig. II is a fragmentary view of the structure, to larger scale and in cross section, on the plane II-II, Fig. I; and Fig. III is a view comparable with Fig. II, but, as distinguished from Fig. II, the parts are shown in positions illustrative of the manner in which the panel of wire screen is assembled and secured in the sash.

As above mentioned, the invention consists in improved means for marginally securing a panel of wire screen in a metal window sash, and, before proceeding further, it is noted that the structure of the invention may be used to anchor the edges of panels of material other than wire screen in rectangular frames other than window sashes. In the exemplary embodiment of the invention herein illustrated, the sash I, shown fragmentarily, is formed of four lengths of metal stock. The stock is of H shape in cross section, as indicated in Fig. II, and the four lengths of stock are at their ends cut on a forty-live degree angle and united by welding (as at 2) at the four corners of the frame. The metal stock of which the frame or sash is formed may be manufactured in a metal-extruding process, and this is a feature of notable, practical value. Preferably the metal used is aluminum, or an aluminum alloy.

The leg portions 3 and 4 on one side of the cross-arm 5 of the H (Fig. III), and the leg portions 6 and 1 on the opposite side of the crossarm, comprise flanges which, in the peripheral extent of the sash, are of uninterrupted continuity. The flanges 6 and 'I on the two vertical sides of the sash are adapted to engage vertical rail elements on the window frame in which the sash is installed, and a felt liner 8 is provided between the flanges, to the end that the engagement with the rail elements will be snug, yet permissive of the ready raising and lowering of the sash. The window frame with its rail elements is not illustrated in the drawing, but may be understood to be of the structure disclosed in my above-noted application, and in Letters Patent No. 2,288,923, granted to me July 7, 1942. Instead, the specific construction of the sash-supporting frame (and, for that matter, the structure of that part of the sash body which engages the frame) forms no part of the present invention, to which attention will now be directed.

The portions 3, 4, and 5 of the sash body form a peripherally extending recess or groove 9, in which the edges of the rectangular panel S of wire screen are secured. The means for securing the edges of the wire screen in the groove 9 consist in clincher strips I0 and cooperating keeper strips II, such strips being formed of metal. A strip I0 is secured upon each of the four edges of the screen panel. The strips I0 are formed with a groove I2 along one edge and a V-shaped rib I3 along the opposite edge. In the groove l2 an edge of screen panel is inserted, and the body of the strip on opposite sides of the groove is compressed, clinching and firmly securing the edge of the screen. The strips I 0 extend substantially the entire lengths of the edges of the screen to which they are severally secured, and, preparatory to introducing the so-reinfo-rced edges of the screen to the peripheral recess 9 of the sash body, the strips are turned into the position shown in Fig. III, in which the bodies of the strips lie flat against the screen. Integrally formed on the inner face of the flange 4 of the sash body is a series of ratchet teeth or ribs I4; these teeth or ribs may run (as they do in this case) throughout the peripheral extent of the rectangular sash body; and they are adapted to cooperate with the ribs I3 on the strips IU, when such strips are assembled in screen-securing position in the peripheral recess 9.

More specilically, when the four reinforced edges of the screen S are inserted, one in each reach of the peripheral recess 9 in the rectangular sash body, the ribs I3 on the strips I0 are pressed into engagement with the ratchet teeth I4. The strips I0 are pressed inward into the recess 9, with the eiiect that the screen is spread and drawn taut in the plane ofthe sash body. The ribs I3 on the so-adjusted strips I0 function as pawls on the ratchet teeth I4, and serve to anchor the strips, with the panel of wire screen marginally united to the sash body. Means are provided for locking the strips I0 in such positions of engagement with the ratchet teeth I4, and such means comprise the keeper strips II.

In order that assembly of the screen with the sash body may be accomplished quickly and with ease, the mouth or entrance of the recess 9 is made relatively wide, preferably by forming the flange 3 shorter or of less breadth than the flange 4. The keeper strips I l are designed, not only to lock the strips IG in assembly with the sash body, but also to close the entrance tothe recess 9. The keeper strips are chisel-shaped at their inner edges, and, when they are pressed edge-wise into position within the flange 3, they wedge the screen-securing strips or bars I into tight engagement with the ratchet teeth i4. Security of the keeper strips is obtained by means of a rib 3@ on the edge of peripherally extending flange 3, such rib engaging a groove Illlin the body of each keeper strip. The metal of which the sash structure is formed has suicient elasticity to permit the keeper strips to be readily snapped into service position, and removed. It will be perceived that the flange 4 of the sash body includes a trim portion Ml, which, in conjunction With the keeper strips l i, completes the enclosure of the peripheral recess or channel 9. The outer edges of the keeper strips Il, and the edge oi the trim portion di), engage between them the body of the screen S, and this is the only apparent engagement of the sash body with the screen. The structure is of neat and pleasing appearance.

Within the terms of the appended claims certain modifications and variations lie within the skill of the engineer and artisan.

I claim as by invention:

l. In a window screen including a rectangular metal frame having a peripherally extending channel and a panel oi wire screen having reinforcing strips clinched upon its marginal edges and positioned in said channel, the invention herein described that comprises interengaged ratchet elements carried severally by said strips and a wall of said channel, and keeper means cooperating with said strips to lock the ratchet elements in engagement, with the panel of wire screen marginally united to said frame.

2. In the combination of a metal frame, including a peripheraliy extending channel, with a panel of iiexible material having a reinforcing strip secured upon its marginal edge and positioned in said channel, the invention herein described that comprises means for anchoring the strip in said channel, and means for locking the strip in anchored position and closing the channel.

3. In the combination of a metal frame, including a perpherally extending channel, with a panel of flexible material having a reinforcing strip secured upon its marginal edge and positioned in said channel, the invention herein described that comprises interengaged ratchet elements carried severally by said strip and a Wall of said channel, and keeper means cooperating with the strip to lock the ratchet elements in engagement, with the panel marginally united to said frame.

4. In the combination of a metal frame, including two flanges extending peripherally of the frame and forming a peripheral channel, with a panel of ilexible material having reinforcing strips secured to its marginal edge and positioned in said channel, the invention herein described that comprises interengaged ratchet elements carried severally by said strips and the wall of said channel, and keeper means cooperating with the strips to lock the ratchet elements in engagement, with the panel marginally united to the frame.

5. In the combination of a metal frame, including two anges extending peripherally of the frame and forming a peripherally extending channel, with a panel of flexible material having reinforcing strips clinched upon its marginal edge and positioned in said channel, the invention herein described that comprises means for anchoring said strips to a Wall of said channel, and keeper strips detachably secured to the frame and locking the strips in anchored position in the channel, said keeper means aiording a closure for the channel.

6. In the combination of a metal frame, including two peripheral flanges of unequal breadth forming a peripherally extending channel in said frame, with a panel of flexible material having a reinforcing strip secured upon its marginal edge and positioned in said channel, the invention herein described that comprises means for anchoring said strip in said channel, and means engaged by the narrower of said peripheral anges and closing the channel with the stripengaged edge of the panel secured therein.

'7. In combination a metal frame having a peripherally extending channel carrying ratchet means on a wall thereof, a panel of wire screen having a reinforcing strip clinched upon its marginal edge, said reinforcing strip carrying a rib portion in engagement with said ratchet means, and means for closing said channel and locking the rib portion oi said reinforcing strip in engagement with said ratchet means.

MOGAN B. SCHILLER. 

